require 'vagrant-skytap/api/resource'
require 'vagrant-skytap/api/interface'
require 'vagrant-skytap/api/credentials'
require_relative 'runstate_operations'

module VagrantPlugins
  module Skytap
    module API
      class Vm < Resource
        include RunstateOperations

        attr_reader :provider_config
        attr_reader :environment

        reads :id, :interfaces, :credentials, :name

        class << self
          def fetch(env, url)
            raise Errors::BadVmUrl, url: url unless url =~ /\/vms\/\d+/
            resp = env[:api_client].get(url)
            new(JSON.load(resp.body), env[:environment], env)
          end

          def current_vm(env)
            if (environment = env[:environment]) && (machine = env[:machine]) && machine.id
              environment.get_vm_by_id(machine.id)
            end
          end
        end

        def initialize(attrs, environment, env)
          super
          @environment = environment
          @provider_config = env[:machine].provider_config
        end

        def refresh(attrs)
          @interfaces = nil
          @credentials = nil
          super
        end

        def interfaces
          @interfaces ||= (get_api_attribute('interfaces') || []).collect do |iface_attrs|
            Interface.new(iface_attrs, self, env)
          end
        end

        def credentials
          @credentials ||= (get_api_attribute('credentials') || []).collect do |cred_attrs|
            Credentials.new(cred_attrs, self, env)
          end
        end

        def hardware
          get_api_attribute('hardware')
        end

        def from_template?
          !!get_api_attribute('template_url')
        end

        def template_id
          get_api_attribute('template_url') =~ /templates\/(\d+)/
          $1
        end

        def region
          return @region if @region
          resp = env[:api_client].get(get_api_attribute('template_url'))
          template_attrs = JSON.load(resp.body)
          @region = template_attrs['region']
        end

        def delete
          begin
            retry_while_resource_busy do
              api_client.delete(url)
              break
            end
          rescue Errors::OperationFailed => ex
            raise Errors::OperationFailed, err: 'Failed to delete VM'
          end
        end

        def machine
          env[:machine]
        end

        def current_machine?
          id && machine && id == machine.id
        end

        def communicate_ready?
          current_machine? && machine.communicate.ready?
        end
      end
    end
  end
end